a) 4x -3(x-3) =x-4 4 x -3x -9 = x= 4 x przenosimy na prawo liczby na prawo zmieniając znaki i tak 4x- 3x -x= 4 +9 - x = 13 mnożymy przez -1 x = - 13
b) 2x -( 3 -2X) = 5 +x - x 2 x -3 +2x = 5 4 x = 5 +3 x = 8 : 4 = 2
c) 5(x-2) +( 3 +x) = 6x -7 5x -10 +3 +x = 6x -7 5x + x - 6x = -7 +7 6x - 6x =0
x = 0
d) -(x -1) +8x =5x - 9 -x +1 +8x = 5x - 9 7x = -9 -1 x = -10 :7 x = - 1,42
e)2(2x +1) = 4x +3 4x +2 =4x + 3 4x-4x = 3-2 x =1
f) 9x +3 = 7(x -2)+1 9x +3 = 7x -14 + 1 9x - 7x = -13-3 2x = -16 x= 16:2 =8
g) 5x - 9 + x = 3(2x - 3) 6x - 9 =6x - 9 6x-6x = -9+9 x =0
h) 4(3x -2) +5 = 2(6x -4) + x 12x - 8 +5 = 12x - 8 + x 12x-8 = 13x -8
12x -13x= -8+8 -x =0 */-1 x =0
